The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

Patented February 8, 1938

If an object in your hands says PAT. FEBRUARY 8, 1938, it may be one of these.

PatentTitleInventorOf
US 2,107,402APPARATUS FOR SEPARATING GENUINE AND SPURIOUS COINSFred E. A. WallinChicago, Illinois

All dates